68rfe Limp Mode - Dodge Cummins Diesel Forum
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post #1 of 5 (permalink) Old 02-13-2019, 01:45 PM Thread Starter
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68rfe Limp Mode

Second time in last 6 month this has happened. First time backed in to parking. Went to leave and 4th gear limp mode. Restarted it and it went away.

Last week 4th limp mode again. In parking lot, got in to go and stuck on 4th. Shut down and restart it went away.

Took truck to have diesel shop scan for codes, pending codes.... came up with nothing related to the drivetrain. Got some weird door codes and egr related codes but that's it.

Fluid changed at 60k... At 128k now. Basically no tow... once every few years.

Got new fluids and filters... going to do this weekend. Just wondering if there is anything I should look for once the pan is off...


THE WHITE WHALE 2010 2500 6.7 4x4. Auto. MCSB. 363SXE. Hamilton 194/220. Manton 110# Springs & Rods. ARP 2000. 160HP Tune By PHIL. 5" TBE. AFE Intake. Fleece Thisandthat.
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post #2 of 5 (permalink) Old 02-13-2019, 09:47 PM
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Check your batteries and all connections between the batteries, TIPM, ECM, TCM, and trans as well as ground straps. Random limp mode with no codes pointing to TCM doesn’t sound right for a grocery getter (ie not regularly towing) unless you’re driving it like every stop light is a .500 pro tree. Weak batteries can cause all manner of seemingly inexplicable faults and usually accompanied by completely unrelated codes.

Hope this helps.


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08 Resistol. Anarchy EFI, 5" TBE, Sinister coolant filter, Carbonite DP sensor, CSS -4" springs, reverse level, CalTracs, Amsoil bypass filter, Revmax VB/TCM, & a madly leaking radiator.
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post #3 of 5 (permalink) Old 02-13-2019, 11:03 PM
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Try and do a trans quick relearn. Never know!
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post #4 of 5 (permalink) Old 02-14-2019, 10:59 AM Thread Starter
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Quote:
Originally Posted by El Pozzinator View Post
Check your batteries and all connections between the batteries, TIPM, ECM, TCM, and trans as well as ground straps. Random limp mode with no codes pointing to TCM doesn’t sound right for a grocery getter (ie not regularly towing) unless you’re driving it like every stop light is a .500 pro tree. Weak batteries can cause all manner of seemingly inexplicable faults and usually accompanied by completely unrelated codes.

Hope this helps.


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Didn't think to check batteries. We have weird weather down here. 40's yesterday... 70's today. Batteries don't last too long here with these temperature fluctuations. Nothing past 3 years so far.

Will look at connections.

THE WHITE WHALE 2010 2500 6.7 4x4. Auto. MCSB. 363SXE. Hamilton 194/220. Manton 110# Springs & Rods. ARP 2000. 160HP Tune By PHIL. 5" TBE. AFE Intake. Fleece Thisandthat.
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post #5 of 5 (permalink) Old 02-16-2019, 06:53 AM
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yep; over in baton rouge. same deal. temperature by delusional schizophrenia, ground-level clouds smearing everything with petroleum-based dew-grease daily, and rain. and rain. and more rain. plus pollen and airborne mold spores. south louisiana and electronics is like Rick James and someone else's couch...
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08 Resistol. Anarchy EFI, 5" TBE, Sinister coolant filter, Carbonite DP sensor, CSS -4" springs, reverse level, CalTracs, Amsoil bypass filter, Revmax VB/TCM, & a madly leaking radiator.
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